Answer:
x=8
base side of isosceles triangle
y=√{8²+8²}=8√2
<span>ratio of surface area = 49:100
ratio of corresponding lengths = √49:√100 = 7:10
answer: C
Hope this helps
</span>
Answer:
3
Step-by-step explanation:
x+10=13
x+10-10=13-10
Simplfiy
x=3
Answer: 
Step-by-step explanation:
By definition, the perimeter of a rectangle is:

Where "l" is the lenght and "w" is the width.
If you solve for "l":

In this case, you know that the following expression represents the perimeter of the rectangle:

And the width of that rectanle is represented wih this expression:

Therefore, based on the explained above, you can conclude that the lenght of that rectangle is given by:

Finally, simplifying the expression, you get:
